Acer TravelMate 7520G Series Service Manual page 128

Keyboard/Touchpad-Related Symptoms
Symptom / Error
Touchpad does not work.
Modem-Related Symptoms
Symptom / Error
Internal modem does not work correctly.
NOTE: If you cannot find a symptom or an error in this list and the problem remains, see "Undetermined
Problems" on page 122.
120
Action in Sequence
Reconnect touchpad cable.
Touchpad board
System board
Action in Sequence
Modem phone port
modem combo board
System board
Chapter 4